One-way drive



May 2, 1950 w. sHuKER ET AL ONE-WAY DRIVE Filed NOV. 5, 1945 INVEN TOPSWILL/AM SHUKER HAPPY MURRAY A TTORNEY Patented May 2, 1950 UNITED STATESPATENT OFFICE ONE-WAY DRIVE William Shuker, San'Franc isco, and HarryMurray, Ross, Calif.

Application November 5, 1945, Serial No. 626,590

2 Claims. 1

This invention relates to a driving mechanism in general, and inparticular to a drive in which the rotation of a drive shaft in oppositedirections imparts to a driven shaft rotation in one direction only.

The object of the present invention is generally to improve and simplifythe construction and operation of drives of the character described; toprovide a drive which comprises a drive and a driven shaft, a first anda second intermediate shaft; a gear drive between the drive and thefirst intermediate shaft; a gear drive between the driven and secondintermediate shaft; a reversing gear drive between the driven and thefirst intermediate shaft and a clutch mechanism for connecting one oranother of the gear drives whereby the driven shaft is driven; andfurther, to provide means whereby reversal of the drive shaft willautomatically actuate the clutch so that the driven shaft will be drivenin one direction only.

The driving mechanism is shown by way of illustration in theaccompanying drawings in which:

Fig. l is a plan view of the driving mechanism;

Fig. 2 is a cross section taken on line II--II of Fig. l; and

Fig. 3 is a plan view of the spiral gear drive formed between the driveand the first intermediate shaft, said view showing the driven spiralgear shifted with relation to the position shown in Fig. 1.

Referring to the drawings in detail, and particvlarlv to Figs. 1 and 2,A indicates a reversible drive shaft, and B a driven shaft to be drivenin one direction only. The driven shaft is mounted in bearings 2 and 3and secured thereon are two spur gears such as indicated at 4 and 5. Apair of intermediate shafts indicated at C and D also employed, theshaft C being supported bearings 6 and l and the shaft D in bearings iiand One or more bearings such as indicated at t are provided for thesupport of the drive shaft.

Secured on the drive shaft is a spiral gear driving pinion I! andintermeshing therewith and secured on the first intermediate shaft C isthe spiral driven gear I2. Freely rotatable on the first intermediateshaft C is a spur gear Hi which intermeshes with an intermediate gearand this in turn intermeshes with the gear i. The gear train formed bythe gears M, 5 and 4 will hereinafter be referred to as a reversing geartrain. Secured on the first intermediate shaft C is a clutch member ISon the opposite faces of which are formed teeth I! and I8. Secured onthe second intermediate shaft D is a cooperating jaw clutch is andformed on one face of the gear it is a cooperating jaw clutch 29. Thefirst intermediate shaft C, together with the clutch l5 and the gear I2,is longitudinally movable in the hearings 6 and l, and such longitudinalmovement is utilized to shift the clutch it either into engagement withthe clutch It or the clutch 20. The longitudinal movement of this shaftand the clutch and the gear carried thereby is automatic and is based onthe fact that if a pair of intermeshing spiral gears are employed suchas iiidicated at H and I2, an end thrust is produced due to the angulardisposition of the gear teeth. Thus, when the driving pinion ii isrotated in the direction of arrow a, the thrust between the angularlydisposed teeth of said pinion and. of the gear 52 causes gear 42together with the shaft C and the clutch IE to assume the position shownin Fig. 1, thus if the drive shaft and pinion H are rotating in thedirection of arrow a, gear [2 together with the shaft C and clutch itwill rotate in the direction of arrow b, and as the clutches l6 and I 8are engaged, power will be transmitted to the shaft D and a gear 50.secured thereon in the direction of arrow 1), and as the gear 5a mesheswith the gear 5 secured on the driven shaft B, the driven shaft willrotate in the direction of arrow a. Conversely, if the direction of thedrive shaft A and the pinion i I is reversed, the thrust between theangularly disposed teeth of the gears i l and i2 will be in the oppositedirection, and gear i2, together with shaft 0 and clutch it, will moveto the opposite end of the pinion II, or in other words assume theposition shown in Fig. 3. When that shift is made, clutch is will engagethe clutch is and as the direction or rotation of shaft C has beenreversed, gear M will be driven in the direction of arrow 0, and as thisintermeshes with the intermediate gear l 4, that gear will be driven inthe direction of arrow at and as it in turn meshes with the gear 4, thatgear will be rotated in the direction of arrow a, and as gear 4 issecured on the driven shaft, it is obvious that the driven shaft B willrotate in the direction of arrow a, regardless of whether the driveshaft A rotates in one direction or another.

Broadly speaking, by employing the spiral gear drive shown at H and it,a driving connection is formed which when reversed, shifts the clutch IEeither into mesh with the reverse gear train or into mesh with theclutch I9 which drives the second intermediate shaft. The shift of theclutch i6 is thus automatic, and it is so positioned that it will eitherdrive through the reverse gear train or through the gears 5 and 5a, thusinsuring rotation of the driven shaft in one direction only.

A drive of this character may have many applications and uses, forinstance in a marine type of Diesel motor which is reversible so that itmay be driven either ahead or astern, it is important that the watercirculating pump and the fuel pump be driven in one direction regardlessof whether the engine is going ahead or reverse. Thus, by introducingthe drive here shown between either the water circulating or the fuelpump and a drive shaft, proper operation of both i or either pump isinsured, and while this and other features of the invention have beenmore or less specifically described and illustrated, it

or judgment of the manufacturer ma dictate or varying conditions or usesmay demand.

Having thus described our invention, what we claim and desire to secureby Letters Patent is:

1. A driving mechanism comprising a driven shaft, first and second gearsfast on said shaft, a

reverse gear in mesh with said first gear, a first driving gear in meshwith said reverse gear, a second. driving gear in mesh with said secondgear, a first intermediate shaft axially slidable and journalled in saidfirst driving gear, a main jaw clutch member fast on and slidable withsaid first inter-l mediate shaft, a first cooperating jaw clutch memberon said first driving gear, a second intermediate shaft supporting andfast on said second driving gear, a second cooperating jaw clutch 4first intermediate shaft, 9. driving shaft held against axial movement,and a driving spiral gear fast on said driving shaft and meshing withsaid driven spiral gear.

2. A driving mechanism comprising a driven shaft, first and second spurgears fast on said shaft, a reverse spur gear in mesh with said firstspur gear, a first driving spur gear in mesh with said reverse gear, asecond driving spur gear in mesh with said second spur gear, a firstintermediate shaft parallel to said driven shaft and axially slidableand journalled in said first driving spur gear, a main jaw clutch memberfast on and slidable with said first intermediat shaft, a firstcooperating jaw clutch member on said first driving gear, a secondintermediate shaft in axial alinement with said first intermediate shaftand member fast on said second intermediate shaft,

supporting and fast on said second driving spur gear, a secondcooperating jaw clutch member fast on said second intermediate shaft, adriven spiral gear fast on and slidable with said first intermediateshaft, a driving shaft parallel to said driven shaft and held againstaxial movement, and a driving spiral gear fast on said driving shaft andmeshing said driven spiral gear.

WILLIAM SHUKER.

HARRY MURRAY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Great Britain Apr. 29, 1938

